Sylvia Evelyn Aritonang, Marietta Shanti Prananta, and Marina A. Moeliono. “Correlation Between Parent’s Education Level and Frequency of Therapy With The Quality of Life in Children With Cerebral Palsy”. Indonesian Journal of Physical Medicine and Rehabilitation, Vol. 5, no. 02, 1, pp. 16 -21, doi:10.36803/ijpmr.v5i02.205.